stella is open source
Now in beta

Legal workspace.
Open source.

Documents, matters, review, and research in one place.
Free to use, open to inspect, yours to keep.

Start free

Tabular review

Extract key fields from large document sets into a table you can sort, filter, and review.

First-class .docx support

Open and edit Word documents in the browser or via the stella desktop app, with AI support along the way.

Grounded research

Search your workspace and trusted sources, with answers tied back to the underlying text.

Built to last

Ready for you.
And your agents.
And whatever comes next.

Documents, matters, and search are free in the beta preview. AI features are available with your own provider key.

Agent-ready workflows

Use MCP and anonymization to connect stella to agent workflows without giving up control over sensitive material.

Anonymize sensitive text

Prepare material for AI workflows without exposing names, entities, or identifying details. Coming soon.

Use your AI provider key

Connect your own AI provider key when using AI features.

Usage options

Choose how to run stella.

No lock-in, no per-seat licensing, no hidden pricing.

Self-host

Free

Run on your infrastructure

Full source access

Apache 2.0 license

Read docs

Cloud preview

Free

Use hosted architecture

Currently in beta preview

BYOK only

Try it out now

Start with a single click.
Need help? Join the community.